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7th grade - Scientific Explanations

Total questions: 20

Worksheet time: 3600secs

Name
Class
Date
1.

______  is a possible explanation about an observation that can be tested scientific  investigations.

a)

prediction

b)

explanation

c)

hypothesis

d)

theory

2.

A description of how close a measurement is to an accepted or true value.

a)

precision

b)

accuracy

c)

scientific measurement

d)

moles

3.

The investigation and exploration of natural events and of new information that results from investigations. When you observe the natural world, you might form questions about what you see.

a)

Scientific theory

b)

investigation

c)

experiment

d)

science

4.

a rule in science that describes a pattern in nature.

             

a)

scientific theory

b)

scientific law

c)

scientific notation

d)

law

5.

An explanation of observation and events based on knowledge gained from many observations and investigations.

a)

scientific theory

b)

scientific law

c)

scientific notation

d)

scientific experimentation

6.

What TWO subjects fall under the branch: life science?

a)

physics

b)

engineering

c)

biology

d)

anatomy and physiology

7.

(Select ALL that Apply) Which subjects fall under the branch: physical science?

a)

physics

b)

physical science

c)

chemistry

d)

anatomy and physiology

8.

(Select All That Apply) Which of the following techniques are used to minimize bias in scientific inquiry?

a)

blinding

b)

systematic random sampling

c)

quality control for reliability and reproducibility

d)

take away outliers

9.

each of the digits of a number that are used to express it to the required degree of accuracy, starting from the first nonzero digit.

a)

scientific notation

b)

percent error

c)

significant figures

d)

scientific law

10.

5.4 has how many significant digits?

a)

2

b)

1

c)

0

11.

1.5432 has how many significant digits?

a)

4

b)

3

c)

1

d)

5

12.

0.056 how many significant digits

a)

2

b)

4

c)

3

d)

5

13.

1.00009

a)

3

b)

2

c)

6

d)

5

14.

a description of how similar or close measurements are to each other

a)

percent error

b)

accuracy

c)

precision

d)

prediction

15.

Which system of measurement is accepted worldwide by scientists?

a)

Imperial System

b)

Metric System

c)

International System of Units (SI)

d)

Metro system

16.

a spoken or written summary of an observation.

a)

description

b)

explanation

c)

prediction

d)

hypothesis

17.

An interpretation of observations.

a)

explanation

b)

description

c)

prediction

18.

The prefix kilo- stands for

a)

102

b)

100

c)

103

d)

1,000,000

19.

comparing what you already know with information your are given in order to decide whether you agree with it

 

a)

prediction

b)

hypothesis

c)

critical thinking

d)

constructive criticism

20.

The 5 steps of scientific method are:

1) Ask questions 2) Make observations 3) Make a hypothesis 4) ______ 5) Analyze and Communicate results

a)

Test the Hypothesis

b)

predict

c)

make an explanation

d)

record data